Victor Schlegel

He is remembered for promoting the geometric algebra of Hermann Grassmann and for a method of visualizing polytopes called Schlegel diagrams.

As recounted by David E. Rowe in 2010: In 1872 Schlegel published the first part of his System der Raumlehre which used Grassmann’s methods to develop plane geometry.

The mathematician Felix Klein addressed Schlegel’s book in a review[2] criticizing him for neglect of cross ratio and failure to contextualize Grassmann in the flow of mathematical developments.

At the Summer meeting of the American Mathematical Society on August 15, 1894, Schlegel presented an essay on the problem of finding the place which is at a minimum total distance from given points.

[3] In 1899 Schlegel became German national secretary for the international Quaternion Society and reported on it in Monatshefte für Mathematik.